#if !defined(RESIP_REFCOUNTEDDESTROYER_HXX)
#define RESIP_REFCOUNTEDDESTROYER_HXX

namespace resip
{

//designed to be used by composition, does not destroy itself.
template<class T>
class RefCountedDestroyer
{
   public:            
      class Guard
      {
         public:
            void destroy()
            {
               mRefCountedDestroyer.mDestroying = true;
            }
            
            bool destroyed()
            {
               return mRefCountedDestroyer.mDestroying;
            }

            Guard(RefCountedDestroyer& rcd)
               : mRefCountedDestroyer(rcd)
            {
               mRefCountedDestroyer.mCount++;               
            }
            
            ~Guard()
            {
               mRefCountedDestroyer.mCount--;               
               if (mRefCountedDestroyer.mDestroying && mRefCountedDestroyer.mCount == 0)
               {
                  delete mRefCountedDestroyer.mTarget;
               }
            }
         private:
            RefCountedDestroyer& mRefCountedDestroyer;            
      };      
         
      RefCountedDestroyer(T* target) :
         mTarget(target),
         mCount(0),
         mDestroying(false)
      {
      }  
   private:
      friend class Guard;            
      T* mTarget;
      int mCount;
      bool mDestroying;      
};

}

#endif

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact vocal@vovida.org.
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 * 
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 *
 */
